Rope-trip



(No Model.)

H. MAPES.

ROPE TRIP.

No. 374,261. Patented Dec. 6, 1887.

' UNITED STATES PATENT OFFICE.

HORACE MAPES, OF MEDORA, ILLINOIS.

ROPE-TRIP.

SPECIFICATION forming part of Letters Patent No. 374,261, dated December 6, 1887.

Application filed March 17,1887. Serial No. 231,270.

To all whom it may concern.-

Be it known that I, HORACE MAPEs, of Me dora, Macoupin county, Illinois, have madea new and useful Improvement in Rope-Trips, of which the following is a full, clear, and exact description.

The present invention is an improved means for slackening the rope used in operating the carrier of a hay-elevator or analogous device. In such operations the practice has been to carry the rope from the elevator around a sheave held in a frame which is anchored in the ground at a suificient distance from the elevator for the horse which draws the rope totravel around it. The horse in his circuit draws the rope first outward from the elevator, then around the sheave, and then backward toward the elevator,and during the last-named movement, and when the carrier has been drawn to the desired point, the sheave is tripped, and the rope thereby cast off and slackened.

The improvement consists substantially as is hereinafter described and claimed, and illus trated in the annexed drawings, making part of this specification, in which Figure 1 is a vertical longitudinal section on the line 1 1 of Fig. 2, which in turn is a plan of the improved trip. Fig. 3 is a view in perspective showing the trip in connection with a hayelevator; and Fig. 4 is a view in perspective of the trip, the sheave being unlocked and turned back.

The sameletters of reference denote the same parts.

A represents the trip. Its essential parts are the base-plate B,'the bracket 0, fastened to the base-plate, the block D, carrying the sheave E and pivoted at d to the bracket 0, and the spring-latch F, to which is attached the trip-rope G. The sheave-block D is adapted to turn in a vertical plane to and fro from the positions shown, respectively, in Figs. 1 and 4. The broken lines in Fig. 1 also indicate the position of the sheave-block when unlatched and upturned. The sheave, when the block (No model.)

is latched, as in Figs. 1, 2, 3, is turned upon its side, and when the block is turned back the sheaveis in an upright position. The block is secured in its down position by means of the latch F, which engages with the projection d, Figs. 1, 3, and to release the block the latch, by means of the rope G, is sprung downward, as indicated by the broken lines, Fig. 1,whereupon the block is free to turn on its horizontal pivot d.

In operation the carrier-rope H is led from the elevator I in the ordinary manner. The horse, (not shown,) by means of the whiffletree J, carries the rope H around the trip. Owing to the bevel b of the base-plate and the bevel d upon the sheave-block the carrier-rope is readily guided onto the sheave, and the extension or arm d of the block D above the sheave serves to hold the rope upon the sheave until the sheave-block is tripped by pulling the rope G. Then, owing to the bevel or flare d of the part d the carrier-rope H is readily cast off from the sheave and the carrier K, Fig. 3, released. The horse continues on his circuit (indicated by the broken line :0, Fig. 3) and the operation is repeated. The trip A is secured by means of the pins L, which pass downward into the ground M. The trip-rope G is carried beneath or through the base-plate B to the latch F, as shown.

I claim- 1'. The combination, in a rope-trip, of the beveled base-plate, the beveled sheave-block provided with the sheave and the flaring arm and pivoted, as described, the sheave block bracket, and the latch, substantially as described.

2. In a ropetrip, a sheave-block pivoted to turn in a vertical plane and being beveled at d and provided with the flaring arm d, as described.

, HORACE MAPES.

Witnesses:

N. CHALLACOMBE, A. P. HARTWELL. 

